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IETF   The Internet Engineering Task Force (IETF) is a large open international community of network designers, operators, vendors, and researchers concerned with the evolution of the Internet architecture and the smooth operation of the Internet
IPv6 Task Force   The IPv6 Cluster is a collaboration among different IPv6 related activities and a central IPv6 information portal
IPv6 Cluster    
IST   The Information Society Technologies web site is a centralportal for the European research activities
Nautilus6   The Nautilus6 working group belongs to the WIDE organization and is managed by volunteers aiming at providing a better mobility IPv6 environment